摘要
Abstract
Closure in the span is the key technology for continuous beam bridge and the key process transforming from cantilever beam to continuous beam. General plan for the closure section construction of the rotating-erected continuous super-long bridge on Hutuo river over-passing Beijing-Guangzhou railway was formulated considering the limited space above the busy existing electrified railway. A specially designed hanging basket with dismountable bottom mould solved the problem of dismounting the hanging basket within the limited space between the beam body and the rigid catenary. The paper introduces the design and manufacture of the basket, installation of the basket, temporary anchoring of rigid reinforcement and dismounting technique for the basket, with notices in the closure construction put forward.关键词
京石客运专线/连续梁桥/预应力混凝土/转体法/合龙段/施工Key words
Beijing-Shijiazhuang passenger dedicated railway/ Continuous beam bridge/ Pre-stressed conctrete/ Rotating-erected technology/ Closure section/ Construction分类
交通工程
